Leonidas-from-XIV

use std::cast;

fn u8tou64(u: &[u8]) -> &[u64] {
        let r:&[u64] = unsafe { cast::transmute(u) };
        r
}

fn main() {
        let s = [1u8, 2u8, 3u8, 4u8];
        let v = u8tou64(&s);

Leonidas-from-XIV

sort.rs:179:5: 179:16 error: use of moved value: `write_cache`
sort.rs:179 				write_cache.push(number);
            				^~~~~~~~~~~
sort.rs:181:31: 181:42 note: `write_cache` moved here because it has type `std::vec::Vec<u64>`, which is non-copyable (perhaps you meant to use clone()?)
sort.rs:181 					write_u64(&mut fdOutput, write_cache);
            					                         ^~~~~~~~~~~
sort.rs:180:8: 180:19 error: use of moved value: `write_cache`
sort.rs:180 				if write_cache.len() >= items_per_run {
            				   ^~~~~~~~~~~
sort.rs:181:31: 181:42 note: `write_cache` moved here because it has type `std::vec::Vec<u64>`, which is non-copyable (perhaps you meant to use clone()?)

Leonidas-from-XIV

fn read_u64(mut from: File, n: uint) -> ~[u64] {
	let mut buffer: Vec<u8> = Vec::with_capacity(n * 4);
	let mut buf = buffer.as_mut_slice();

	match from.read(buf) {
		Ok(_) => (),
		Err(e) => fail!("reading failed {}", e),
	};
	let v: ~[u64] = unsafe { std::cast::transmute(buf) };
	v

Leonidas-from-XIV

fn write_u64(to: &mut File, items: &Vec<u64>) {
	let mut written: Vec<u8> = unsafe { cast::transmute(items) };
	let written_len = written.len();
	unsafe { written.set_len(written_len * 8)};
	match to.write(written.as_slice()) {
		Ok(_) => (),
		Err(e) => fail!("writing failed: {}", e),
	};
}

Leonidas-from-XIV

	let mut buffer = [0, .. 8];
	let read = match fdInput.read(buffer) {
		Ok(num) => num,
		Err(e) => fail!("Couldn't read"),
	};
	println!("read {} bytes", read);
	let number = match u64::parse_bytes(buffer, 2) {
		Some(n) => n,
		None => fail!("Reading number"),
	};

Leonidas-from-XIV

module Main where

input = [
    "4", "S", "a", "t", "z", "0",
    "3", "D", "a", "s", "17",
    "3", "e", "i", "n", "1",
    "3", "i", "s", "t", "12"
]

traverse :: [String] -> Int -> [String]

Leonidas-from-XIV

Keybase proof

I hereby claim:

• I am Leonidas-from-XIV on github.
• I am leonidas (https://keybase.io/leonidas) on keybase.
• I have a public key whose fingerprint is 2584 25CE B974 611B 6423 7553 5759 82D1 87A6 E2C5

To claim this, I am signing this object:

Leonidas-from-XIV

breakNth _ [] = ([], [])
breakNth n lat = case splitAt (n-2) lat of
	(skipped,r:rs) -> let (skipped', rest) = breakNth n rs in
		(skipped ++ skipped', x:r:rest)
	(skipped, []) -> (skipped, x:[])

Leonidas-from-XIV

	Tue Feb 25 11:21 2014 Time and Allocation Profiling Report  (Final)

	   MajorElement +RTS -p -RTS fb27.txt

	total time  =        7.05 secs   (7047 ticks @ 1000 us, 1 processor)
	total alloc = 7,444,747,008 bytes  (excludes profiling overheads)

COST CENTRE           MODULE    %time %alloc

processLine.entries.\ Main       47.8   32.9

Leonidas-from-XIV

slidingWindow :: [Int] -> [[Int]]
slidingWindow [] = []
slidingWindow [a] = []
slidingWindow (a:b:xs) = [a,b]:(slidingWindow (b:xs))

pascalTriangle :: Int -> [Int]
pascalTriangle 0 = []
pascalTriangle 1 = [1]
pascalTriangle n = 1:(map sum $ slidingWindow $ pascalTriangle $ n-1) ++ [1]